diff --git a/EgtMachKernel.vcxproj b/EgtMachKernel.vcxproj
index 6ccdae8..ac9b300 100644
--- a/EgtMachKernel.vcxproj
+++ b/EgtMachKernel.vcxproj
@@ -21,7 +21,7 @@
   <PropertyGroup Label="Globals">
     <ProjectGuid>{0BD58222-92F3-48B2-B656-4497D1956874}</ProjectGuid>
     <RootNamespace>EgtMachKernel</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.17763.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>10.0.20348.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
diff --git a/Pocketing.cpp b/Pocketing.cpp
index f91130c..617d27c 100644
--- a/Pocketing.cpp
+++ b/Pocketing.cpp
@@ -5501,25 +5501,49 @@ Pocketing::AdjustContourWithOpenEdges( ICurveComposite* pCompo)
    AdjustContourStart( pCompo) ;
   // raggio di riferimento per offset
    double dRad = 0.5 * m_TParams.m_dDiam + GetOffsR() ;
-  // estraggo tutte le curve in un vettore
+  // estraggo parti con proprietà uniforme in un vettore
    ICURVEPOVECTOR vpCrvs ;
-   vpCrvs.reserve( pCompo->GetCurveCount()) ;
-   while ( pCompo->GetCurveCount() > 0)
-      vpCrvs.emplace_back( pCompo->RemoveFirstOrLastCurve( false)) ;
-  // elimino le curve troppo corte (10 epsilon)
-   for ( int i = 0 ; i < int( vpCrvs.size()) ;) {
-      double dLen = 0 ; vpCrvs[i]->GetLength( dLen) ;
-      if ( dLen < 10 * EPS_SMALL)
-         vpCrvs.erase( vpCrvs.begin() + i) ;
-      else
-         ++ i ;
+   int nCurrTempProp ;
+   int nParStart = 0 ;
+   for ( int i = 0 ; i < pCompo->GetCurveCount() ; ++ i) {
+      int nTempProp ;
+      pCompo->GetCurveTempProp( i, nTempProp) ;
+      if ( i == 0) {
+         nCurrTempProp = nTempProp ;
+         nParStart = i ;
+      }
+      else if ( nCurrTempProp != nTempProp) {
+         PtrOwner<ICurve> pCrv( pCompo->CopyParamRange( nParStart, i)) ;
+         if ( IsNull( pCrv))
+            return false ;
+         pCrv->SetTempProp( nCurrTempProp) ;
+         pCrv->SetExtrusion( vtExtr) ;
+         vpCrvs.emplace_back( Release( pCrv)) ;
+         nCurrTempProp = nTempProp ;
+         nParStart = i ;
+      }
    }
+   PtrOwner<ICurve> pCrv( pCompo->CopyParamRange( nParStart, pCompo->GetCurveCount())) ;
+   if ( IsNull( pCrv))
+      return false ;
+   pCrv->SetTempProp( nCurrTempProp) ;
+   pCrv->SetExtrusion( vtExtr) ;
+   vpCrvs.emplace_back( Release( pCrv)) ;
   // offsetto del raggio le curve aperte
    for ( int i = 0 ; i < int( vpCrvs.size()) ; ++ i) {
-      if ( vpCrvs[i]->GetTempProp() == 1)
-         vpCrvs[i]->SimpleOffset( dRad) ;
+      if ( vpCrvs[i]->GetTempProp() == 1) {
+         OffsetCurve OffsCrv ;
+         if ( ! OffsCrv.Make( vpCrvs[i], dRad, ICurve::OFF_FILLET)  ||  OffsCrv.GetCurveCount() == 0) {
+            m_pMchMgr->SetLastError( 2412, "Error in Pocketing : Offset not computable") ;
+            return false ;
+         }
+         vpCrvs[i].Set( OffsCrv.GetLongerCurve()) ;
+         vpCrvs[i]->SetTempProp( 1) ;
+      }
    }
   // reinserisco le curve, chiudendo eventuali gap
+   pCompo->Clear() ;
+   pCompo->SetExtrusion( vtExtr) ;
    bool bOpenCurr = false ;
    double dDiam = 1.05 * m_TParams.m_dDiam + 2 * GetOffsR() ;
    for ( int i = 0 ; i < int( vpCrvs.size()) ; ++ i) {
@@ -5552,8 +5576,14 @@ Pocketing::AdjustContourWithOpenEdges( ICurveComposite* pCompo)
                pJCrv->ToGlob( frPocket) ;
                vpCrvs[i]->ToGlob( frPocket) ;
               // taglio opportunamente le curve
-               IntCrvCrvInfo aInfo ;
-               if ( intCC.GetIntCrvCrvInfo( intCC.GetIntersCount() - 1, aInfo)) {
+               if ( intCC.GetIntersCount() > 0) {
+                 // cerco la prima intersezione che entra nella curva aperta
+                  IntCrvCrvInfo aInfo ;
+                  for ( int j = 0 ; j < intCC.GetIntersCount() ; ++ j) {
+                     if ( intCC.GetIntCrvCrvInfo( j, aInfo)  &&  aInfo.IciA[0].nPrevTy == ICCT_OUT) {
+                        break ;
+                     }
+                  }
                   pJCrv->TrimEndAtParam( aInfo.IciA[0].dU) ;
                   vpCrvs[i]->TrimStartAtParam( aInfo.IciB[0].dU)  ;
                   pCompo->AddCurve( ::Release( pJCrv), true, 10 * EPS_SMALL) ;